.zt_switch_16{
	position: fixed; 
	top: 30%; 
	width: auto; 
	height: auto; 
	z-index: 99999;
}
.zt_switch_17{
	position: fixed; 
	top: 50%; 
	width: auto; 
	height: auto; 
	z-index: 99999;
}
.zt_switch_16 a, .zt_switch_17 a{	
	display: block;
	width: 37px;
	height: 137px;
	overflow: hidden;
	text-indent: -99999px;
}
